Speak with each of the different aspects of Tanath (Tanath's Shadows) around the room in the following order:

1st : NW

2nd : SW

3rd : SE

4th : NE

5th : NW

6th : SW

7th : SE

Speak with Tanath L'Vec again. This time select the new (middle) dialogue option. After the dialogue is complete, right-click the beacon next to Tanath to collect it.

Return to Xilania Nevagon to complete the quest and claim your reward. NOTE: There are two Xilania Nevagons. One is in Neriak at the Spires of Innoruuk, the other is in Greater Faydark near the wizard spires. All of these quest turn ins must be done in Greater Faydark.